Single Supply, Low Power a Triple Video Amplifier AD813 FEATURES PIN CONFIGURATION Low Cost 14-Lead DIP and SOIC Three Video Amplifiers in One Package Optimized for Driving Cables in Video Systems 14 OUT2 DISABLE1 1 Excellent Video Specifications (R = 150 V) L 13 IN2 DISABLE2 2 Gain Flatness 0.1 dB to 50 MHz +IN2 DISABLE3 3 12 0.03% Differential Gain Error V + V 4 11 0.068 Differential Phase Error S S AD813 +IN1 Low Power 5 10 +IN3 Operates on Single +3 V to 615 V Power Supplies IN1 6 9 IN3 5.5 mA/Amplifier Max Power Supply Current OUT1 8 OUT3 7 High Speed 125 MHz Unity Gain Bandwidth (3 dB) 50 MHz while offering differential gain and phase error of 500 V/ms Slew Rate 0.03% and 0.06. This makes the AD813 ideal for broadcast High Speed Disable Function per Channel and consumer video electronics. Turn-Off Time 80 ns Easy to Use The AD813 offers low power of 5.5 mA per amplifier max and 50 mA Output Current runs on a single +3 V power supply. The outputs of each ampli- Output Swing to 1 V of Rails fier swing to within one volt of either supply rail to easily accom- modate video signals. While operating on a single +5 V supply APPLICATIONS the AD813 still achieves 0.1 dB flatness to 20 MHz and 0.05% Video Line Driver & 0.05 of differential gain and phase performance. All this is LCD Drivers offered in a small 14-lead plastic DIP or SOIC package. These Computer Video Plug-In Boards features make this triple amplifier ideal for portable and battery Ultrasound powered applications where size and power are critical. RGB Amplifier CCD Based Systems The outstanding bandwidth of 125 MHz along with 500 V/s of slew rate make the AD813 useful in many general purpose, high speed applications where a single +3 V or dual power supplies PRODUCT DESCRIPTION up to 15 V are needed. Furthermore the AD813 contains a The AD813 is a low power, single supply triple video amplifier. high speed disable function for each amplifier in order to power Each of the three current feedback amplifiers has 50 mA of output down the amplifier or high impedance the output. This can then current, and is optimized for driving one back-terminated video be used in video multiplexing applications. The AD813 is avail- load (150 ). The AD813 features gain flatness of 0.1 dB to able in the industrial temperature range of 40C to +85C in plastic DIP and SOIC packages as well as chips. G = +2 R = 150V L 0.2 500mV 500ns 615V 0.1 100 0 90 0.1 65V 0.2 3V 0.3 5V 0.4 10 0.5 0% 5V 100k 1M 10M 100M FREQUENCY Hz Figure 1. Fine Scale Gain Flatness vs. Frequency, Figure 2. Channel Switching Characteristics for a 3:1 Mux G = +2, R = 150 L REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties Tel: 781/329-4700 World Wide Web Site: AD813SPECIFICATIONS Dual Supply ( T = +258C, R = 150 V, unless otherwise noted) A L Model AD813A Conditions V Min Typ Max Units S DYNAMIC PERFORMANCE 3 dB Bandwidth G = +2, No Peaking 5 V 45 65 MHz 15 V 75 100 MHz Bandwidth for 0.1 dB Flatness G = +2 5 V 15 25 MHz 15 V 25 50 MHz 1 Slew Rate G = +2, R = 1 k5 V 150 V/s L 15 V 150 250 V/s G = 1, R = 1 k5 V 225 V/s L 15 V 450 V/s Settling Time to 0.1% G = 1, R = 1 k L V = 3 V Step 5 V 50 ns O V = 10 V Step 15 V 40 ns O NOISE/HARMONIC PERFORMANCE Total Harmonic Distortion f = 1 MHz, R = 1 k15 V 90 dBc C L Input Voltage Noise f = 10 kHz 5 V, 15 V 3.5 nVHz Input Current Noise f = 10 kHz, +In 5 V, 15 V 1.5 pAHz In 5 V, 15 V 18 pAHz Differential Gain Error NTSC, G = 2, R = 150 5 V 0.08 % L 15 V 0.03 0.09 % Differential Phase Error 5 V 0.13 Degrees 15 V 0.06 0.12 Degrees DC PERFORMANCE Input Offset Voltage 5 V, 15 V 2 5 mV T T 12 mV MIN MAX Offset Drift 5 V, 15 V 15 V/C Input Bias Current 5 V, 15 V 5 30 A T T 35 A MIN MAX +Input Bias Current 5 V, 15 V 0.5 1.7 A T T 2.5 A MIN MAX Open-Loop Voltage Gain V = 2.5 V, R = 150 5 V 69 76 dB O L T T 66 dB MIN MAX V = 10 V, R = 1 k15 V 73 82 dB O L T T 72 dB MIN MAX Open-Loop Transresistance V = 2.5 V, R = 150 5 V 300 500 k O L T T 200 k MIN MAX V = 10 V, R = 1 k15 V 400 900 k O L T T 300 k MIN MAX INPUT CHARACTERISTICS Input Resistance +Input 15 V 15 M Input 15 V 65 Input Capacitance +Input 15 V 1.7 pF Input Common Mode 5 V 4.0 V Voltage Range 15 V 13.5 V Common-Mode Rejection Ratio Input Offset Voltage V = 2.5 V 5 V 54 58 dB CM Input Current 23 A/V Input Current 0.07 0.15 A/V Input Offset Voltage V = 10 V 15 V 57 62 dB CM Input Current 1.5 3.0 A/V +Input Current 0.05 0.1 A/V 2 REV. B